/*
 Copyright 2007 Ole Rogeberg

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */
package org.lifeyears.common;

import org.apache.commons.lang.NullArgumentException;
import org.apache.commons.lang.StringUtils;

public final class AssertArg
{
    /**
     * Asserts that the given argument should not be null
     */
    public static void notNull( final String arg, final Object val )
    {
        if ( val == null )
        {
            throw new NullArgumentException( "Null used for argument " + arg );
        }
    }

    /**
     * Asserts that the given String argument should not be empty
     */
    public static void notEmpty( final String arg, final String val )
    {
        notNull( arg, val );

        if ( StringUtils.isEmpty( val ) )
        {
            throw new NullArgumentException( "Empty String used for argument " + arg );
        }
    }

}
